Joseph b



(No Model.)

J. B. DE LERY. INGANDESGENT BURNER.

,652. Patented Oct; 12, 1897.

cmRrs vcvzas cc, mum-mun, WASHINGTON o c UNITED STATES PATENT I OFFICE.

JOSEPH 13. DE LE'RY, on NEW YORK, N. Y.

INCANDESCENT BURNER.

SPECIFICATION forming part of Letters Fatent No. 591,652, dated October 12, 1897.

Application filed March 2, 1897. Serial No. 625,704. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH B. on LERY, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Incandescent Burners, of which the following is a full, clear, and exact description.

This invention relates to gas-lighting by incandescence; and it consists of certain improvements in burners and the manner of grouping the same, whereby (a) much of the loss heretofore experienced in the destruction of the incandescing mantles is avoided; (b) the renewal of mantles may be accomplished with facility; any member of a group of burners to which the gas-supply is controlled by a single valve may be operated while the remainder are out of operation; (d) equal gaspressure to each burner of a group is insured, and (6) it is possible to group a certain number of burners into the smallest and most compact space. The construction whereby these objects are accomplished will now be described with reference to the accompanying drawings, in which Figure 1 is a side elevation of my improved burner and its mounting. Fig. 2 is a plan of the parts below line 00 a; of Fig. 1. Fig. 3 is a vertical section, on an enlarged scale, of one of the burners without the mantle. Fig. 4 is a perspective view, on an enlarged scale,of the mantle and holder; and Fig. 5 is a view of one of the stoppers.

The general construction of the burner comprises a gas reservoir or box substantially in the shape of a drum, into the upper side of which are tapped a series of burner-tubes individually provided with air-inlets and each carrying an incandescing mantle. Aside from this general construction the invention also comprises certain details of construction relating to the burners.

Referring to the drawings by letter, a represents a cylindrical reservoir or drum directly connected with a gas-pipe a and into which gas is admitted or cut off at pleasure byavalve (L The upper side of the gas-drum is a disk, around the edge of which is arranged a series of burner-tubes I). These communicate with the interior of the drum by means of nipples c, which also serve as supports for disk 0 is such that the lower end of tube 1) I will fit tightly over it, it being merely forced into place. This lower end of the tube is provided with'lateral openings 1) for the ingress of air. At the upper end of the tube an enlarged chamber 19 is formed, in which is located a deflecting device b in the form of a propeller, which, however, does not rotate on the spindle b, to which it is attached. Above this propeller and across the top of the tube is a screen of wire network 6 This deflector 79 serves to thoroughly mix together the gas flowing through the nipple and the air coming through the lateral openings before they pass out of the burner. Around the top of the burner is placed a thimble 12 having an inwardly-turned upper edge the function of which is to hold the wire screen in place. This fits into the burner-tube friction-tight.

e is the incandescing mantle or hood, the means for mounting which upon the burner is a feature of my invention. This consists of a collar f, adapted to pass loosely over the top of the burner outside of the thimble and having an inwardly-turned flange or edge f, adapted to rest upon the edge of the opening in the burner to support the collar. On one side the collar is provided with a handle f 2 and on the other side with a perforated lug f and binding-screw f Through the lug a wire f passes and is held in place by the screw. This wire supports the mantle from its upper end, the mantle at its lower end surrounding the opening in the top of the burnertube. The collar fis merely suspended by its upper edge upon the top of the burnertube, so that to remove it it is only necessary to lift it off.

I am aware of the existence of a gas-burner wherein a gas drum or reservoir having a series of burners tapped into the same have been used, but in such instance the air is also admit-ted into the reservoir with the gas, which I claim not to be as good a feature as the construction described by me, wherein the air is separately admitted to the individual burners outside of the drum. In my way the quantity of air admitted to each burner can be adjusted, whereas by the other way the proportion of air and gas flowing to the several burners is a variable quantity due to the unequal mixing of the gas and air in the drum. Furthermore, it is not desirable to mix a large body of air and gas together. Aside from the matter of mixing the gas and air'together the drum to which the supply of gas is controlled by a singlevalve and to which the burners are directly connected gives an advantage over a construction wherein a cluster of lights is supplied by a series of radial pipes from a common center, as in such latter construction the gas-pressure to the difierent burners often varies by reason of the clogging of the passages by the deposits from the gas, which is always unequal, and because the pressure to the individual burners cannot be kept so uniform as when a large body of gas in a reservoir is used.

One of the important advantages of my invention is the ease with which broken mantles may be removed and replaced, and the fact that such operation may be accomplished without interfering in the slighest degree with the other mantles of the group. This burner is primarily designed to replace the ordinary average-sized incandescent burner, and the group of small burners here shown will not occupy any more space than the single large burner now in commercial use. Each of my burners is comparatively small, the mantle being only about one and onehalf inches long, while the diameter of the drum is about the same dimension. It-follows from this that with incandescing material of the same texture and strength my mantles will resist much greater disturbing forces than the other on account of its lesser area. entails a very small loss, as only a fraction of the entire light-giving elements is destroyed.

If, however, the mantle does break, it

Any injured mantle may be removed by sim- 5o ply lifting ofi the collar f supporting it. Another collar, which will always be at hand, having previously had a new mantle attached to it, is then inserted in place by merely dropping the collar over the top of the burner. If a mantle is broken and another is not at hand with which to replace it, or it is only desired to burn some of the mantles, while others are out of use, this may be accomplished by removing the burner-tube b from the nipple and screwing the cap (shown in Fig. 5) onto the outward projection of the nipple, thus stopping the flow of gas to that particular burner and leaving all of the active burners still under the control of the valve (1 p The deflecting-plate at the outlet of the burner is a good feature of my invention, as it constitutes an efiective mixing device for the air and gas just before it enters the mantle. The fixed blades of the deflector impart a twist to the air and creates currents which thoroughly mix them.

Having thus described my invention, I claim- 1. An incandescent gas-burner consisting of a drum or reservoir to which the gas is admitted, in combination with a plurality of burners attached directly thereto, an incandescin g mantle or element mounted upon each burner and means for admitting air to each of the gas-passages between the drum and the incandescing material, whereby uniform pressure and a proper proportion and mixture of air to each burner are insured, substantially as described.

2. In an incandescent burner, the combination of a gas-chamber, a nipple screwed into the same and a burner-tube supported bythe nipple and provided with an air-supply passage, said nipple also provided with a gaspassage.

In testimony whereof I subscribe my signature in presence of two witnesses.

JOSEPH B. DE LERY.

Witnesses:

WM. A. ROSENBAUM, FRANK S. OBER. 

